3429720 has 96 divisors (see below), whose sum is σ = 12748320. Its totient is φ = 783360.

The previous prime is 3429703. The next prime is 3429721. The reversal of 3429720 is 279243.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3429721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1840 + ... + 3200.

It is an arithmetic number, because the mean of its divisors is an integer number (132795).

Almost surely, 2^3429720 is an apocalyptic number.

3429720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3429720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6374160).

3429720 is an abundant number, since it is smaller than the sum of its proper divisors (9318600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3429720 is a wasteful number, since it uses less digits than its factorization.

3429720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385 (or 1378 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 3429720 is about 1851.9503233078. The cubic root of 3429720 is about 150.8063245054.

The spelling of 3429720 in words is "three million, four hundred twenty-nine thousand, seven hundred twenty".